Locomotive boiler



Sept. l, 1.931. I C, G, HAWLEY 1,821,638

. LOCOMOTIVE BOILER Filed July 13, 1929 Patented Sept. 1, 1931 CHARLES G. HAWLEY,"F vCHI.Cirielli rnrlrivors, Assignee fro; Locorvrofrrvn ijrnnnor Coil/renier, or enrolled rnnrlvors A consumieron orvermehreny .toeerrorrvs Berners.,

YA13pnefmom fild July is,

This invention relates to improvements, iii locomotive boilersfend especiallyy to those equipped With thermiesiphoris and it oonsiste ot the mettere, Lbereitetiter described 51k rind more particularly pointed out in tbe dii- 'Pended claims. Y j f yThe primary obieetiotthe invention is to improve theeetion of the siiohon forming' a bert of the Water eirouletory .system of tlie 1o boiler, by employing therein e deviee to -oooot with portions of the Siphon to forni e YConduit therein, whereby s Port of tbe Welter entering the Siphonrorn the bottom of the boiler, is directed against Siphon snrfeees re- Ymoved from the inlet neelr to keep the seine oleen against thelseeurnnletion slid deposit of sediment rind the lilrevThis object of the invention es Wellr .es others together` with the rrrsny edventeges thereof, will more ,fully eprieer es I. nroeeed `with. my' ,speeilieetoni Y 1n the draivingsrf e Y Fig, l is longitudinal vertical seetionsl View through the fireloox end of e locomotive boiler embodying rnv-inventions .t

.Fg- 2 is lborizontol det-silseotol throng-b e port ot the Siphon ,of the lboiler on en enlerged; seele es token Yori-.the line 2,.-2 of Eigle 'l i 3o "Eisis s transverse vertieol detrril see- Ational kview through ,toert ot tliesiielron es token onetbe line lf3 OffrFig. 2

Referring novvin detail to that embodinient. of the invention illustreted in tlredrevvrings, l indieetes :esv Whole the lireboX of e locomotive boiler comprising affine sheet 2, feel" sheet 3, crown Vsheet 4i rind side sheets 5,V The bottone. portion or the line sheet 2 forms the inn-er y'throat slieetf. All the sheets insty mentioned ere disposed in the rnanner foundin ireboxes of this kind. 7

indicatesthetopsheet of theboiler, 8 the outerv hack sheet,' Qthe shell and 10 the outer front throat sheet of the boiler. s

f Several of the 'sheetsrmentioned coact to form'the front throat 11, hack WaterleglQ l'and theiusual'side water'legs (IiQtsho'Wrl) ally closed at vthe bottom by st-mud ring lit in the shell 9 endoonneoted. t0, tlie line sheet :o0 eretlie Usual tubes id through Whieb. the

1929. Se1ia1-No. 378,151.

products of combustion7 pass on theirv tvay to the vsmoke box not shown in the mennerwell lmovvnr l5 indicates the fuel door openingk formedby coaeting integrel-langes ofthe inner and,l outer throat sheet 3 and 8 respec- 1;

tively. The construction above described may Well be takenas typical of that found in locomotive boilers now in general use.

.l To increase the WaterA circulating yeind steaming efficiency of such boilers, additional heatingeleinents are employed inthe fire-- box and suoli elements usually draw boiler Water from Ythe front Water leg` or from the shell at a point in' advance thereof and discharges the same, usually through the 'crown sheet.. As anexempleof: suoli an elenient I have illustrated what has novv hecome'lrnoyvn as the Nicholson therrnic Siphon and! with which my presentinvention isl associated.

Suchsiphons are of diiferent types hut they all embody the seme generie principles of operation and Asuch types by reason of dif,- ferenee in shape or structure lieve beeoine classifiedas a plein Siphon or as :t bull noseor roundborner"7 siplion. The invention es herein illustrated and .esherern described is off speels-l utility in connection with a siphon of the lestk mentioned kind.A 1

- 16 indios-tesv este `Whole suoli un element or Siphon and the number and size .of such elle-A rnents or siplions employed inalireboxris of course dependent 'upon the WidthA rind length of therebox. Soidsiplion eornprises o flot hollowy body 17 ofv substantially triangular Vshape open atftlie iro-pond a tubular inletl neck 18. The Siphon body includes spaced side Walls lil-19, 4front and roerend Walls '20 andl respectively and ztdownwardly and forwardly biilged bottom portion "22 "that 2merges at one endV intosaid-neclr sind is connected atits Yotherend by'a rounded corner 23 with said rear wall.- Such aj corner, rvhieli denes a pocketin the Siphon is responsible ingr the term bull nose or round` cornerlvtggs ernployed in connection with such a siphonfto distinguish it from one Where such a. corner is notemployed., Such vloull poseer round Corne-r Siphon ,is Often desired because it per- .Inits the use; of. e lover ond' lesserbrielr srelif VBt (not shown) without bringing the rear end thereof too close to the crown sheet.

The walls 19-19 of the Siphon are connected together by Staybolts 2li and the top end of the sides and end walls of the Siphon are flanged outwardly as at 25 to engage and be secured in a suitable openingl provided therefor in the crown sheet. The bottom end of the neck is engaged in and welded to the flexible diaphragm portion 26 formed in the throat Sheet.

In operation, the Siphon is Subj ected to the heat of the burning fuel in the firebox and this, of course, raises the temperature of the water in the Siphon and a portion is generated into Steam. Such steam and the water in the Siphon being displaced by the heavier water `from the neck 18 and the lower part of the boiler, passes upwardly to be discharged into vthe boiler Space above the crown Sheet. This action results in the entrance of water from the throat and through the neck 18 at high velocity. AS the water enters the larger body from the neck, its velocity is reduced, with a corresponding reduction in action as far as lconcerns the washing or cleaning the rearward interior parts of the Siphon, which are relatively remote from the neck.`

To overcome this condition, I provide in the Siphon an elongated bar or member 27 which extends from a point approximately in the plane ofl the front end wall 20 of the Siphon body toa point substantially within the nose or corner pocket- 23 of the Siphon, as best Shown in Fig. 1. This bar 27 is supported by the staybolts 24, preferably by means of one or more yokes 28. It is pointed out that said narrow plate or bar is disposed just above the bulge along the bottom of the Siphon and is made narrower than the distance between the Side walls of the body So as to leave spaceS29-29 between the side walls 19,0f the Siphon andsaid bar or Strip. y

Thus as the water enters the inlet neck, a part thereof will ass under Said bar` which togetherwith the ulged bottom of t-he Siphon forms a duct or channel positively directing a considerable volume of Said water into the rear end or `corner pocket 23 of the Siphon, to keep it clean. Some of the water which moves beneath Said bar will pass up through the spaces 29-29 between said plate vand Siphon walls together with the Steam evolved to mingle with'the Amixture of water and steam in the body and'pass upward through the discharge mouth into the water Space above the crown sheet. However, even though the velocity of the water in the bulged Laage-38 Siphon to prevent the accumulation ot sediment therein.

By arranging the bar or strip under the staybolts of the bottom row, a relatively smooth surface is presented to the water in the bottom or bulged portion of the Siphon, so that resistance to and disturbance of the longitudinal or distributive tlow of said water in Said bulged portion 22 is reduced to a minimum.

While in describing my invention, I have referred in detail to the form, arrangement and construction of the several parts thereof, the Same is to be considered merely as illustrative so that I do not wish to be limited thereto except as may be specifically pointed out in the appended claims.y

I claim as my invention zl 1. In combination with a locomotive boiler irebox, a thermic Siphon disposed in Said' firebox and having a high velocity inlet end and a lower velocity outlet end opening through two different Sheets of the {irebox there being a pocket in said Siphon between Said ends, and a member in said Siphon and coacting with a part of the Same to direct a portion of the high velocity water entering the inlet end toward said pocket.

2. In combination with a locomotive boiler irebox, a thermic Siphon disposed in Said* lirebox and having a. high velocity inlet end and a lowerA velocity outlet end opening through two different Sheets of the firebox Vthere being a pocket in said Siphon between said ends, and a member 1n said Siphon co-' acting with the bottom portion thereof to form a duct for directing a part of the high velocity water entering the inlet end into said pocket.

3. In combination with a locomotive boil-f box there being a pocket in said Siphon be tween Said ends, and a member in said Siphon spaced from the yside walls thereof and coacting with the bottom portion of the Siphon to form a duct for directing a part of the highV velocity water entering said inlet end into'said pocket and permitting some of the water in Said duct to pass upwardly through the Space betweensaid member and the side walls of the Siphon.

4; In combination with a locomotive boiler firebox havingstaybolted Side walls, a therlmicsiphon disposed in said irebox and having a high velocity inlet en'd and a lower velocity outlet end opening through two dif- Vferent sheets of the tirebox there being a pocket in Said Siphon between said ends,'and a Substantially flat member, supported from stay bolts near the bottom of the siphonand coacting with said bottom of the Siphon to direct a portion of the high velocity water entering said inlet end into said pocket.

5. In combination with a flat tubular Siphon having a staybolted body and a bulged bottom portion extending at one end beyond the body to form a high Velocity inlet neck there being a pocket in said body spaced` from said neck, a member supported by some of the stay bolts and disposed substantially 1o parallel with said bulged portion and coacting therewith to form a duct open at both ends and spaced laterally inward from the side sheets of the body one end of said duct terminating near said pocket.

In testimony whereof, I have hereunto set my hand, this 8th day of July, 1929.

CHARLES G. HAWLEY. 

